Perhaps you should try some spelling variations:
thuoc luan » thuc luan, nuoc luan, hoc luan
nghien huu » nghien cuu, nguyen huu, nhiem huu
luan cong » luat cong, luong cong, luan chung
hang khoa » dung khoa
cong tan » cong tac, cong san, cong thanh
hoc hang » hoc hanh, hoc bang, hoc tang
khoa hoc » hoa hoc
von luan » tong luan
huu mot » cuu mot, huy mot, hieu mot
mot hoc » mon hoc, mo hoc, mot goc
xua hai » qua hai, xa hai, xuan thai
cua hai » qua hai, cua dai, cua hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc luan cong tan, nghien huu mot hoc hang khoa hoc ((xua hai) OR (cua hai)) von luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc luan cong tan, nghien huu mot hoc hang khoa hoc ((xua hai) OR (cua hai)) von luan van".
• Adding a wildcard symbol may retrieve word variants: thuoc luan cong tan, nghien huu mot hoc hang khoa hoc ((xua hai) OR (cua hai)) von luan van*.